270 lines
8.8 KiB
JavaScript
270 lines
8.8 KiB
JavaScript
//\/////
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//\ overLIB Shadow Plugin
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//\ This file requires overLIB 4.10 or later.
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//\
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//\ overLIB 4.05 - You may not remove or change this notice.
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//\ Copyright Erik Bosrup 1998-2003. All rights reserved.
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//\ Contributors are listed on the homepage.
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//\ See http://www.bosrup.com/web/overlib/ for details.
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//
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//\/////
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//\mini
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////////
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// PRE-INIT
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// Ignore these lines, configuration is below.
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////////
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if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Shadow Plugin.');
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else {
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registerCommands('shadow,shadowcolor,shadowimage,shadowopacity,shadowx,shadowy');
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////////
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// DEFAULT CONFIGURATION
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// You don't have to change anything here if you don't want to. All of this can be
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// changed on your html page or through an overLIB call.
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////////
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if (typeof ol_shadowadjust=='undefined') var ol_shadowadjust=2; // for Ns4.x only
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if (typeof ol_shadow=='undefined') var ol_shadow=0;
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if (typeof ol_shadowcolor=='undefined') var ol_shadowcolor='#CCCCCC';
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if (typeof ol_shadowimage=='undefined') var ol_shadowimage='';
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if (typeof ol_shadowopacity=='undefined') var ol_shadowopacity=0;
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if (typeof ol_shadowx=='undefined') var ol_shadowx=5;
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if (typeof ol_shadowy=='undefined') var ol_shadowy=5;
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////////
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// END OF CONFIGURATION
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// Don't change anything below this line, all configuration is above.
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////////
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////////
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// INIT
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////////
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// Runtime variables init. Don't change for config!
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var o3_shadow=0;
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var o3_shadowcolor="#cccccc";
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var o3_shadowimage='';
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var o3_shadowopacity=0;
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var o3_shadowx=5;
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var o3_shadowy=5;
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var bkSet=0; // Needed for this effect in NS4
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// Function which sets runtime variables to their default values
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function setShadowVariables() {
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o3_shadow=ol_shadow;
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o3_shadowcolor=ol_shadowcolor;
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o3_shadowimage=ol_shadowimage;
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o3_shadowopacity=ol_shadowopacity;
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o3_shadowx=ol_shadowx;
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o3_shadowy=ol_shadowy;
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}
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// Parses shadow commands
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function parseShadowExtras(pf,i,ar) {
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var k = i, v;
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if (k < ar.length) {
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if (ar[k]==SHADOW) { eval(pf +'shadow=('+pf+'shadow==0) ? 1 : 0'); return k; }
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if (ar[k]==SHADOWCOLOR) { eval(pf+'shadowcolor="'+ar[++k]+'"'); return k; }
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if (ar[k]==SHADOWOPACITY) {v=ar[++k]; eval(pf+'shadowopacity='+(olOp ? 0 : v)); return k; }
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if (ar[k]==SHADOWIMAGE) { eval(pf+'shadowimage="'+ar[++k]+'"'); return k; }
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if (ar[k]==SHADOWX) { eval(pf+'shadowx='+ar[++k]); return k; }
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if (ar[k]==SHADOWY) { eval(pf+'shadowy='+ar[++k]); return k; }
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}
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return -1;
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}
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// Function for MOUSEOUT/MOUSEOFF feature with shadow
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function shadow_cursorOff() {
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var left= parseInt(over.style.left);
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var top=parseInt(over.style.top);
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var right=left+(o3_shadow ? o3_width : over.offsetWidth);
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var bottom=top+(o3_shadow ? o3_aboveheight : over.offsetHeight);
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if (o3_x < left || o3_x > right || o3_y < top || o3_y > bottom) return true;
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return false;
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}
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// Pre-hide processing to clean-up.
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function checkShadowPreHide() {
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if (o3_shadow && o3_shadowopacity) cleanUpShadowEffects();
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if (o3_shadow && (olIe4 && isMac) ) over.style.pixelWidth=over.style.pixelHeight = 0;
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}
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// Funciton that creates the actual shadow
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function generateShadow(content) {
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var wd, ht, X = 0, Y = 0, zIdx = 0, txt, dpObj, puObj, bS= '', aPos, posStr=new Array();
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if (!o3_shadow || (o3_shadowx == 0 && o3_shadowy == 0)) return;
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X = Math.abs(o3_shadowx);
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Y = Math.abs(o3_shadowy);
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wd = parseInt(o3_width);
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ht = (olNs4) ? over.clip.height : over.offsetHeight;
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if (o3_shadowx == 0) {
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if (o3_shadowy < 0) {
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posStr[0]=' left:0; top: 0';
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posStr[1]=' left:0; top: '+Y+'px';
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} else if (o3_shadowy > 0) {
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posStr[0]=' left:0; top: '+Y+'px';
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posStr[1]=' left:0; top:0';
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}
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} else if (o3_shadowy == 0) {
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if (o3_shadowx < 0) {
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posStr[0]=' left:0; top: 0';
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posStr[1]=' left: '+X+'px';
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} else if (o3_shadowx > 0) {
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posStr[0]=' left: '+ X+'px; top: 0';
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posStr[1]=' left:0; top:0';
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}
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} else if (o3_shadowx > 0) {
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if (o3_shadowy > 0) {
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posStr[0]=' left:'+ X+'px; top:'+Y+'px';
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posStr[1]=' left:0; top:0';
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} else if (o3_shadowy < 0) {
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posStr[0]=' left:'+X+'px; top:0';
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posStr[1]=' left:0; top: '+Y+'px';
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}
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} else if (o3_shadowx < 0) {
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if (o3_shadowy > 0) {
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posStr[0]=' left:0; top:'+Y+'px';
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posStr[1]=' left:'+X+'px; top:0';
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} else if (o3_shadowy < 0) {
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posStr[0]=' left:0; top:0';
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posStr[1]=' left:'+X+'px; top:'+Y+'px';
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}
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}
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txt = (olNs4) ? '<div id="backdrop"></div>' : ((olIe55&&olHideForm) ? backDropSource(wd+X,ht+Y,zIdx++) : '') + '<div id="backdrop" style="position: absolute;'+posStr[0]+'; width: '+wd+'px; height: '+ht+'px; z-index: ' + (zIdx++) + '; ';
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if (o3_shadowimage) {
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bS='background-image: url('+o3_shadowimage+');';
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if (olNs4) bkSet=1;
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} else {
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bS='background-color: '+o3_shadowcolor +';';
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if (olNs4) bkSet=2;
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}
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if (olNs4) {
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txt += '<div id="PUContent">'+content+'</div>';
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} else {
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txt += bS+'"></div><div id="PUContent" style="position: absolute;'+posStr[1]+'; width: '+ wd+'px; z-index: '+(zIdx++)+';">'+content+'</div>';
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}
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layerWrite(txt);
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if (olNs4 && bkSet) {
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dpObj = over.document.layers['backdrop'];
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if (typeof dpObj == 'undefined') return; // if shadow layer not found, then content layer won't be either
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puObj = over.document.layers['PUContent'];
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wd = puObj.clip.width;
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ht = puObj.clip.height;
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aPos = posStr[0].split(';');
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dpObj.clip.width = wd;
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dpObj.clip.height = ht;
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dpObj.left = parseInt(aPos[0].split(':')[1]);
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dpObj.top = parseInt(aPos[1].split(':')[1]);
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dpObj.bgColor = (bkSet == 1) ? null : o3_shadowcolor;
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dpObj.background.src = (bkSet==2) ? null : o3_shadowimage;
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dpObj.zIndex = 0;
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aPos = posStr[1].split(';');
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puObj.left = parseInt(aPos[0].split(':')[1]);
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puObj.top = parseInt(aPos[1].split(':')[1]);
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puObj.zIndex = 1;
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} else {
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puObj = (olIe4 ? o3_frame.document.all['PUContent'] : o3_frame.document.getElementById('PUContent'));
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dpObj = (olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
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ht = puObj.offsetHeight;
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dpObj.style.height = ht + 'px';
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if (o3_shadowopacity) {
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var op = o3_shadowopacity;
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op = (op <= 100 ? op : 100);
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setBrowserOpacity(op,dpObj);
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}
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}
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// Set popup's new width and height values here so they are available in placeLayer()
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o3_width = wd+X;
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o3_aboveheight = ht+Y;
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}
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////////
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// SUPPORT FUNCTIONS
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////////
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// Cleans up opacity settings if any.
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function cleanUpShadowEffects() {
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if (olNs4 || olOp) return;
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var dpObj=(olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
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cleanUpBrowserOpacity(dpObj);
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}
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// multi browser opacity support
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function setBrowserOpacity(op,lyr){
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if (olNs4||!op) return; // if Ns4.x or opacity not given return;
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lyr=(lyr) ? lyr : over;
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if (olIe4&&typeof lyr.filters != 'undefined') {
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lyr.style.filter='Alpha(Opacity='+op+')';
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lyr.filters.alpha.enabled=true;
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} else {
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var sOp=(typeof(lyr.style.MozOpacity)!='undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity)!='undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity)!='undefined' ? 'opacity' : ''));
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if (sOp) eval('lyr.style.'+sOp+'=op/100');
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}
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}
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// multi-browser Opacity cleanup
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function cleanUpBrowserOpacity(lyr) {
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if (olNs4) return;
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lyr=(lyr) ? lyr : over;
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if (olIe4&&(typeof lyr.filters != 'undefined'&&lyr.filters.alpha.enabled)) {
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lyr.style.filter='Alpha(Opacity=100)';
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lyr.filters.alpha.enabled=false;
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} else {
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var sOp=(typeof(lyr.style.MozOpacity)!='undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity)!='undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity)!='undefined' ? 'opacity' : ''));
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if (sOp) eval('lyr.style.'+sOp+'=1.0');
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}
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}
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// This routine is needed only for Ns4.x to allow use of popups with dropshadows and CSSCLASS at the same time on a page
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function shadowAdjust() {
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if (!olNs4) return;
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var fac = ol_shadowadjust;
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if (olNs4) {
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document.write('<style type="text/css">\n<!--\n');
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document.write('#backdrop, #PUContent {position: absolute; left: '+fac*o3_shadowx+'px; top: '+fac*o3_shadowy+'px; }\n');
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document.write('-->\n<' + '\/style>');
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}
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}
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////////
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// PLUGIN REGISTRATIONS
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////////
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var before = (typeof rmrkPreface!='undefined' ? rmrkPreface : null);
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registerRunTimeFunction(setShadowVariables);
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registerCmdLineFunction(parseShadowExtras);
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registerHook("cursorOff",shadow_cursorOff,FREPLACE);
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registerHook("hideObject",checkShadowPreHide,FBEFORE);
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registerHook("createPopup",generateShadow,FAFTER,before);
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if (olInfo.meets(4.10)) registerNoParameterCommands('shadow');
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if (olNs4) shadowAdjust(); // write style rules for proper support of Ns4.x
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} |